Shiftable tracker-bar.



PATENTED MAR. 31, 1908.

A. KUHLE. SHIFTABLE TRACKER BAR.

v APPLIGATIONTILED 0017.25, 1907.

Wihauuo 1% u mw New York, in the county of Hudson and .to make and use the same.

UNITED STATES PATENT orrrcn.

ARTHUR KUHLE, orWEs'r NEW YORK, NEW JERSEY, ASSIG-NOR Toninnuanyrnrn a COMPANY, OF NEW YORK, 'N. Y.,

AcoaronArion on NEW ro RKf SHIFTABLE TRACKER-BA n No.-8 83,206. Specification of as Patent.

Application filed. October 25, 1907. Eerie! 110. 399,157.

To. all whom alt may concern: 1 Be it known that I, ARTHUR KUHLE, a citizen ofthe United States, residing at West State-of New Jersey, have invented certain new and useful Im rovements' in Shiftable Tracker-Bars; and do hereby declare the following to be a full, clear, and exact deothers skilled in the art to which it appertains This invention relates to improvements i tracker bars for -musical instrument players, and is more articularly directed to means of adjustment or the bar for shifting the same relative to the music sheet for transposing purposes or merely for adjusting the apertures of the bar into exact alineinent with the sheet music apertures.

The object in view is the facilitating of a close and accurate adjustment of the tracker bar which shall be accomplished with rapidity and ease.

With this and further objects in view, the invention comprises the combination with a slidingly mounted tracker bar, of a transvcrsely sliding cam connected therewith, and means for shifting the cam.

The invention comprises certain other novel constructions, combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawing:-Figure 1 is a horizontal section through a fragment of. a trackerbar support, parts being seen in plan and the preferred embodiment of the present invention being illustrated. Fig' 2 is a side view thereof. Fig. 3 use de tail, transverse section taken on the plane Fig. .4 1881 indicated b T line 3', 3'of Fig. 1. longitudinal, vertical section taken. on the plane indicated by line 4, 4 of l, and also on line 4, 4, of Fig. 3.

Referring to the drawing by numerals, 1 indicates a tracker bar provided with the usual. exhaust ports 2, 2. The tracker bar 1 is preferably mounted in suitable supports 3 and is provided with a longitudinally alined shaft 1 projecting, beyond the sup port. The shaft 4 extends beyond the support 2% and 1s bifurcated at its outer end, as indi- 7, the plate 7 being formed with a longi-,

Patented March 31, 1908. i

'tudinal slot 8 through which extends guiding e.

and retaining pins or bolts 9, 9 which pro jectlaterally fromithe plated. Projectingnj;

laterally from and at an angle to the plate '7, and preferably formedintegral therewith is a preferably flat bar 10 which 1:. vextend,

at any degree of angularity relative to the plate 7 as is found desirable... The bar 10;

projectsbetween the arms ofrt hebifurcation 5 and is formed with a gu ding slot 11. through'which slot extends a pin 12 jour-.,

naled transversely in the armsiof thebifurca-;

'tion'. The pin 12 is preferably formed inter- I mediate its length with an efnlargeinentlg;

which extends longitudinally bf the slot 11 for servin as a uide the in 12Tivotin freelv.

g r: 1 .P g e for "accommodating movement relative to theshaft t;-

i Near one end of the plate 7, theedge there g a rack-14 which. isengaged by a pinioirM carried by a shaft of is preferallly formed into ofthe bar 10,

15 extending through a'bearingin the sup-.

port 3 and having at its outer end an operating milled head 16. While I have illustrated. the gear 14 and rack 15 as being of the ordinary s ur type, obviously a worm gear may be substituted for locking the parts at various points of adjustment.

When applying the sheet of music, if it is found that the ports 2 do not exactly register.

with the apertures of the sheet, the head 16 will be revolved which. will cause the plate 7 to slide longitudinally and thus cause the bar. 10, which in fact is a cam, to either push in or draw out the shaft 4 and correspondingly move the bar 1. When it is desired to transpose the music, it is only necessary to adjust the cam 10 to a sufi icient extent for shifting the bar 1 the required distance for 'causing the new ports 22 to register with the given apertures in the sheet music.

What I claim a 1. In a device of the character described,

the combination with a support longitudinally shiftable tracker bar, of a cam slidably' mounted "shifting the tracker bar, and means for moving saidcam. -f-

L. In a device ofthe class described, the combination with a sucport and a tracker bar shiftably mountedtherein, of a cam concated at A bearing plate 6 is' preferably fixed to the support 3 above and at one side j of the shaft 4 and slidingly supports a-plate'l neet'fd with and'adjustahle transversely of the trackerbarfolf shifting the same, and gearing connected with said cam and extendin beyond the support for enabling throu manna shifting of the'carn.

3. In a device of the class described, the combination with a support and a tracker bar shiftably carried thereby, of a cam movable transversely of and connected to said bar for shifting thesame when the cam is moved, a slide pla'te carrying said cam, and gears for actuating said slide plate;

4. In a device of the class described, the combination with a support and a tracker bar shiftably mounted therein, of a bar. disposed in angular relation thereto and shiftable transversely of the tracker bar, means connecting the bars, a plate for shifting the tracker bar when the second mentioned bar is shifted, and means for shifting the second mentioned bar.

In a device of the class described, the combination with a su )port and a tracker bar shiftably mounted thereon, of a 'bar mounted to move transversely with respect to the tracker bar and having a guide disposed in angular relation to the tracker bar,

means connecting said tracker bar with said guide, and means for shifting the second mentloned bar.

6. In a device of the class described, the" combination with a support and a tracker bar shiftably mounted t iereln, of a bar movable transversely with respect to the tracker bar and formed with a slotdisposedin angular relation to the tracker bar, a pin connected with the tracker bar. and extending combination with a suppo h said slot, and means for shifting the secon 'mentioned bar.

7. In a device of-the class described, the rt and a tracker bar' shiftably mounted therein, of a slide plate arra ed to slide transversely with respect to t e tracker bar. a cam projecting from said slide plate in m nlur relation to the tracker bar, a slidablo connection between the tracker bar and cam, and means for shifting said slide plate.

8. In a device of the class described,the combination with a'sup ort and a tracker bar shiftably mounted t erein, and having an extending portion-projecting beyond the support and bifurcated, a longitudinally slotted bar projecting between the arms of the bifurcation and of the tracker bar, the longitudinal slot in the second mentioned bar being disposed in angular relation to the tracker bar, a pin pivotally mounted in the arms of the bifurcation and extending throu h the slot, 8 uide on said pin within said s 0t, and means or shifting the second mentioned bar.

9. In a device of the class described, a longitudinally shiftable bar, and a sliding earn adapted-techif-kthe bar.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR Klllllil'l.

Witnesses:

E. A. SCHMITS, Jon: E. CAPLEAS.

shiftable transversely 

